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Logic Page
Function or
Significant I/O Signals
Location and Name
Type
Reference
Major Units
Input
Output
H2
9071
KF01'-07'
Contains dot counter, Osc; Read Out Shift;
Interface Op Step Retrace
Clock and Step Control
character counter,
Set I/O Fast Shift;
Ctr; Dot
1-8;
Char 0;
buffer shifting
Load Late Reg; Last
Next to Last Char; Last
controls, and buffer
Line.
Char; Char Ctr All
attribute register.
Ones; Fast Shift Latch;
Unformatted Display;
Normal Gates; High
Intensity, Non Disp
Blank; Unprotected Char;
Numeric Field.
J2
9067
KFll'-18'
Contains retrace
Step Retrace Ctr;
Set Blank for Retrace;
Display Control
counter, line
Retrace Blank; Lines
First 9 Lines; Ld LB
counter, row counter, 0-9; Csr Line; Input
Gates; Shift Line
analog controls,
Inhibited; System
Buff; Ld Atb Reg from
and controls to
Ready; Insert Mode.
Fets; Step Row Ctr;
display indicators.
Horiz Sync; Blank
CRT at Video Output;
Row 0; Row
1;
Last
R
0IIIt;
E nd Screen;
Unblank; Shift Fets;
I
Vertical Retrace;
!
Bump Display; Serial
!
Shift GT.
:
K2
9058
MC011-091
Contains gates to
Fets Out Bits 2-9;
Pre ROS Bits 2, 3, and
Line Buffer and
(M1)
line buffer, ROS
Shift Line Buff;
7; Bits 4, 5, 6, and 8
Character Generator
9070
register, line
Blank CRT at Video
from Line Buffer; Non
(M2)
buffer, ROS
Output; Unblank
Display or Hi Inten;
character generator,
Ind; Lines 0-8.
Video Data Out.
and data serializer
I
for analog.
L2
(Not Used)
"M2
9088
KT011-061
Contains selector
I/O Busy; Bits 4, 5,
Bit 7 and LB and MB;
LP Control
light-pen interface
6, and 8 from Line
LP Busy; LP Aid Bits
and control
Buffer; Pre ROS
3,4, 5, and 6.
circuitry.
bits 2, 3, and 7.
"N2
2229
KR011-071
Contains magnetic
CR Data; Keybd
Strobe; Bits 0-7;
Card Reader
card reader interface
Bits 0-7; Keybd
Pty; Gate Keyboard.
and control
Parity Bit.
circuitry.
·Optional feature cards
Diagram
6-8.
Logic Card Data (Sheet
2
of
2)
Reference Data 6-11
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